 |
|
COMMENTS AND OPINIONS
On Running Late in Life
Peter Höglund, MD, PhD;
L. A. Fredrik Nilsson, PhD
|
|
| Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings. |
|
|
|
We read with interest the article by Chakravarty and coworkers.1 Although the concept of salutary effects of running is appealing, there are some features of this study that require the findings to be interpreted with caution.
The Health Assessment Questionnaire Disability Index2 (HAQ-DI) comprises 8 categories, each of which has at least 2 component questions, totaling 20 items. There are 4 possible responses for each item, scored 0 to 3, and a category score is determined from the highest item score in that category. The sum of the 8 category scores is divided by 8, yielding a single disability index from 0 to 3. Thus, the HAQ-DI will tend to inflate when a subject has answered more than 1 item within a category with a nonzero score. Furthermore, since the categories are correlated, a person having difficulties within one category will . . . [Full Text of this Article]
AUTHOR INFORMATION
 CiteULike  Connotea  Del.icio.us  Digg  Reddit  Technorati  Twitter
What's this?
RELATED ARTICLE
Reduced Disability and Mortality Among Aging Runners: A 21-Year Longitudinal Study
Eliza F. Chakravarty, Helen B. Hubert, Vijaya B. Lingala, and James F. Fries
Arch Intern Med. 2008;168(15):1638-1646.
ABSTRACT
| FULL TEXT
RELATED LETTERS
Incidence of Atrial Fibrillation Among Aging Runners
Michael Laurent
Arch Intern Med. 2009;169(7):719.
EXTRACT
| FULL TEXT
On Running Late in Life—Reply
Eliza F. Chakravarty, Helen B. Hubert, Vijaya B. Lingala, and James F. Fries
Arch Intern Med. 2009;169(7):720.
EXTRACT
| FULL TEXT
|
